CN206593980U - A kind of coal and rock many reference amounts monitoring test device under the loading based on true triaxial - Google Patents
A kind of coal and rock many reference amounts monitoring test device under the loading based on true triaxial Download PDFInfo
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- CN206593980U CN206593980U CN201720346318.4U CN201720346318U CN206593980U CN 206593980 U CN206593980 U CN 206593980U CN 201720346318 U CN201720346318 U CN 201720346318U CN 206593980 U CN206593980 U CN 206593980U
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- 239000003245 coal Substances 0.000 title claims abstract description 45
- 239000011435 rock Substances 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 37
- 230000008054 signal transmission Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 17
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of coal and rock many reference amounts monitoring test device under loading based on true triaxial, including pressure chamber, four levels and a vertical stress load cylinder；Pressure chamber's side wall is provided with four horizontal stress loading hole, and bottom plate is provided with vertical stress loading hole, and top plate passes through hole and detachable-type sealed cover plate provided with sample handling；Stress loading depression bar is respectively arranged with each stress loading hole, both are slidably matched in sealing；Depression bar is inner and seal cover board lower surface is respectively arranged with pressure head, and pressure head side surface is equipped with acoustic emission probe, and pressure chamber's inner surface is equipped with micro- electrically susceptible sense nickel cobalt pole piece；Strain gauge is housed between stress loading depression bar and cylinder piston rod；Equipped with the cylinder that is rigidly connected between cylinder block and pressure chamber's outer wall, grating sensor is installed between stress loading depression bar and the cylinder that is rigidly connected；Pressure chamber's side wall, which is provided with signal transmission socket, socket, is respectively equipped with electric signal transmission interfaces and acoustic emission signal coffret；Pressure head sets some groups according to different sizes.
Description
Technical field
The utility model belongs to mechanical test technical field in coal and rock room, more particularly to a kind of based on true triaxial loading
Under coal and rock many reference amounts monitoring test device.
Background technology
Bump refers to the surrounding rock body abrupt release elastic deformation energy of roadway or working face and produced acutely broken suddenly
Bad dynamic phenomenon, when bump occurs, is often accompanied by dishing out for a large amount of coal and rocks, while with the huge sound and rock mass
Vibrations, cause tunnel or working face moment to be damaged, gently then cause the damage of equipment, injures and deaths that are heavy then causing underground work personnel.
In recent years, as coal industry formally enters the deep mining stage, by deep " a three high disturbances " effect, impact
The occurrence frequency of ground pressure accident also shows obvious ascendant trend, therefore, by under deep " a three high disturbances " effect
Coal and rock carries out the acoustic emission signal produced in mechanical behavior research, monitoring coal and rock stand under load destructive process and electric signal, analysis
Its temporal and spatial evolution, can help technical staff to understand catastrophe of the deep coal and rock during Engineering Disturbance and breed mechanism,
And corresponding coal and rock catastrophe judgement and Prevention Technique are set up, the safe working to realizing deep coal has important science meaning
Justice and construction value.
But, it is desirable to realize above-mentioned target, it usually needs mechanical test in progress coal and rock room, and the coal petrography used at present
Physical scholarship and moral conduct experimental rig also rests on normal triaxial load phase mostly, it is difficult to simulate the true occurrence status of coal and rock, and
Coal and rock mechanical behavior Evolution obtained by experiment is also difficult to reflect actual conditions.
Therefore, need badly and develop a kind of coal and rock many reference amounts monitoring test device that disclosure satisfy that true triaxial loading environment, its
Should possess three below condition：1., possesses the ability for individually applying the three-dimensional load such as not；2., possessing makes coal and rock be in high pressure
Power fluid environment and the ability that record is monitored to pressure change；3., possess and coal and rock is produced in true triaxial loading procedure
Raw stress, strain, acoustic emission signal and electric signal parameter is monitored the ability of record.
Utility model content
The problem of existing for prior art, the utility model provides ginseng more than a kind of coal and rock under being loaded based on true triaxial
Monitoring test device is measured, possesses the ability for individually applying the three-dimensional load such as not, possessing makes coal and rock be in high pressure fluid environment
And the ability of record is monitored to pressure change, possess the stress produced to coal and rock in true triaxial loading procedure, strain,
The parameter such as acoustic emission signal and electric signal is monitored the ability of record, and the coal and rock mechanical behavior as obtained by experiment, which develops, advises
Rule can preferably reflect actual conditions, and theoretical foundation and Engineering Guidance are provided for the prediction preventing and treating of Deep Mine dynamic disaster.
To achieve these goals, the utility model is adopted the following technical scheme that：A kind of coal under the loading based on true triaxial
Rock mass many reference amounts monitoring test device, including pressure chamber, first level stress loading oil cylinder, the second horizontal stress loading oil
Cylinder, the 3rd horizontal stress load cylinder, the 4th horizontal stress load cylinder and vertical stress load cylinder；
The pressure chamber uses square structure, and first level stress is offered respectively on four side walls of pressure chamber
Loading hole, the second horizontal stress loading hole, the 3rd horizontal stress loading hole and the 4th horizontal stress loading hole, in pressure chamber
Vertical stress loading hole is offered on bottom plate, sample handling are offered on the top plate of pressure chamber by hole, sample handling are logical
Detachable-type sealed cover plate is installed on via, fluid fillers hole is offered on the side wall of pressure chamber；
First level stress loading depression bar, first level stress loading are installed in the first level stress loading hole
Depression bar is slidably matched with the sealing of first level stress loading hole, the piston rod and the first water of the first level stress loading oil cylinder
The outer end of horizontal stress loading depression bar is fixedly connected with, and first level stress loading oil cylinder is mutually solid by cylinder body and the outer wall of pressure chamber
Even；
Second horizontal stress loading depression bar, the loading of the second horizontal stress are installed in the second horizontal stress loading hole
Depression bar is slidably matched with the sealing of the second horizontal stress loading hole, the piston rod and the second water of the second horizontal stress load cylinder
The outer end of horizontal stress loading depression bar is fixedly connected with, and the second horizontal stress load cylinder is mutually solid by cylinder body and the outer wall of pressure chamber
Even；
3rd horizontal stress loading depression bar, the loading of the 3rd horizontal stress are installed in the 3rd horizontal stress loading hole
Depression bar is slidably matched with the sealing of the 3rd horizontal stress loading hole, the piston rod and the 3rd water of the 3rd horizontal stress load cylinder
The outer end of horizontal stress loading depression bar is fixedly connected with, and the 3rd horizontal stress load cylinder is mutually solid by cylinder body and the outer wall of pressure chamber
Even；
4th horizontal stress loading depression bar, the loading of the 4th horizontal stress are installed in the 4th horizontal stress loading hole
Depression bar is slidably matched with the sealing of the 4th horizontal stress loading hole, the piston rod and the 4th water of the 4th horizontal stress load cylinder
The outer end of horizontal stress loading depression bar is fixedly connected with, and the 4th horizontal stress load cylinder is mutually solid by cylinder body and the outer wall of pressure chamber
Even；
Vertical stress loading depression bar is installed in the vertical stress loading hole, vertical stress loading depression bar is with vertically should
The sealing of power loading hole is slidably matched, and the outer end of piston rod and vertical stress the loading depression bar of the vertical stress load cylinder is mutually solid
Even, vertical stress load cylinder is fixedly connected with by the outer wall of cylinder body and pressure chamber；
In the inner of the first level stress loading depression bar, inner, the 3rd level of the second horizontal stress loading depression bar
The inner of stress loading depression bar, the inner of the 4th horizontal stress loading depression bar, vertical stress load the inner and detachable of depression bar
The lower surface of formula seal cover board is mounted on pressure head；
Acoustic emission probe neck is offered in the side surface of the pressure head, acoustic emission is installed in acoustic emission probe neck and visited
Head, is measured by acoustic emission probe to acoustic emission signal；Micro- electrically susceptible sense nickel is installed in the inner surface of the pressure chamber
Cobalt pole piece, is measured by micro- electrically susceptible sense nickel cobalt pole piece to electric signal；
Between the piston rod of the first level stress loading depression bar and first level stress loading oil cylinder, the second level
Between the piston rod of stress loading depression bar and the second horizontal stress load cylinder, the 3rd horizontal stress loading depression bar and the 3rd level
Between the piston rod of stress loading oil cylinder, the 4th horizontal stress loading depression bar and the 4th horizontal stress load cylinder piston rod it
Between, vertical stress loading depression bar and vertical stress load cylinder piston rod between add strain gauge.
The first level stress loading oil cylinder, the second horizontal stress load cylinder, the 3rd horizontal stress load cylinder,
Rigidity is mounted between four horizontal stress load cylinders and the cylinder body of vertical stress load cylinder and the outer wall of pressure chamber to connect
Connect cylinder, the first level stress loading depression bar, the second horizontal stress loading depression bar, the 3rd horizontal stress loading depression bar, the 4th
Horizontal stress loads and is mounted on grating sensing between depression bar and vertical stress loading depression bar and each self-corresponding cylinder that is rigidly connected
Device, the displacement for loading depression bar to each horizontal stress by grating sensor is measured.
Described be rigidly connected between cylinder and the outer wall of pressure chamber uses two-stage connected mode, and be rigidly connected a connection end tool
There is external screw thread, and the threaded connection of the first order is carried out by external screw thread and the outer wall of pressure chamber, in the rigidity of male ends
Ring flange is provided with connecting cylinder, and passes through ring flange and the bolt connection of the outer wall of the pressure chamber progress second level.
Signal transmission socket is installed on the side wall of the pressure chamber, signal transmission socket is integrally in disk form,
Signal transmission socket is provided centrally with electric signal transmission interfaces, and the circumference of signal transmission socket is provided with acoustic emission signal
Coffret.
The pressure head is provided with some groups according to different sizes, for being adapted to various sizes of coal and rock sample.
The beneficial effects of the utility model：
The utility model compared with prior art, possesses the ability for individually applying the three-dimensional load such as not, possessing makes coal and rock
The ability of record is monitored in high pressure fluid environment and to pressure change, is possessed to coal and rock in true triaxial loading procedure
Stress, strain, acoustic emission signal and the electric signal parameter of middle generation are monitored the ability of record, the coal petrography as obtained by experiment
Mechanics behavior evolution rule can preferably reflect actual conditions, for Deep Mine dynamic disaster prediction preventing and treating provides theory according to
According to and Engineering Guidance.
Brief description of the drawings
Fig. 1 cuts open for the coal and rock many reference amounts monitoring test device forward direction under a kind of loading based on true triaxial of the present utility model
View；
Fig. 2 for it is of the present utility model it is a kind of loaded based on true triaxial under coal and rock many reference amounts monitoring test device bow to cuing open
View；
Fig. 3 is the positive sectional view of pressure chamber of the present utility model；
Fig. 4 is that pressure chamber of the present utility model bows to sectional view；
In figure, 1-pressure chamber, 2-first level stress loading oil cylinder, the 3-the second horizontal stress load cylinder, 4-
3rd horizontal stress load cylinder, the 5-the four horizontal stress load cylinder, 6-vertical stress load cylinder, 7-first level
Stress loading hole, the 8-the second horizontal stress loading hole, the 9-the three horizontal stress loading hole, the loading of the 10-the four horizontal stress
Hole, 11-vertical stress loading hole, the handling of 12-sample are by hole, and 13-detachable-type sealed cover plate, 14-first level should
Power loads depression bar, the 15-the second horizontal stress loading depression bar, the 16-the three horizontal stress loading depression bar, the 17-the four horizontal stress
Load depression bar, 18-vertical stress loading depression bar, 19-fluid fillers hole, 20-pressure head, 21-acoustic emission probe, 22-micro- electricity
Sensitive nickel cobalt pole piece, 23-strain gauge, 24-be rigidly connected cylinder.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figures 1-4, a kind of coal and rock many reference amounts monitoring test device under loading based on true triaxial, including pressure
Chamber 1, first level stress loading oil cylinder 2, the second horizontal stress load cylinder 3, the 3rd horizontal stress load cylinder the 4, the 4th
Horizontal stress load cylinder 5 and vertical stress load cylinder 6；
The pressure chamber 1 uses square structure, and offering first level respectively on four side walls of pressure chamber 1 should
Power loading hole 7, the second horizontal stress loading hole 8, the 3rd horizontal stress loading hole 9 and the 4th horizontal stress loading hole 10, in pressure
Vertical stress loading hole 11 is offered on the bottom plate of power chamber 1, sample handling are offered on the top plate of pressure chamber and pass through hole
12, sample handling on hole 12 by being provided with detachable-type sealed cover plate 13, and offering fluid on the side wall of pressure chamber 1 fills
Fill hole 19；
First level stress loading depression bar 14, first level stress are installed in the first level stress loading hole 7
Loading depression bar 14 is slidably matched with the sealing of first level stress loading hole 7, the piston rod of the first level stress loading oil cylinder 2
It is fixedly connected with the outer end of first level stress loading depression bar 14, first level stress loading oil cylinder 2 passes through cylinder body and pressure chamber 1
Outer wall be fixedly connected with；
Second horizontal stress loading depression bar 15, the second horizontal stress are installed in the second horizontal stress loading hole 8
Loading depression bar 15 is slidably matched with the sealing of the second horizontal stress loading hole 8, the piston rod of the second horizontal stress load cylinder 3
The outer end for loading depression bar 15 with the second horizontal stress is fixedly connected with, and the second horizontal stress load cylinder 3 passes through cylinder body and pressure chamber 1
Outer wall be fixedly connected with；
3rd horizontal stress loading depression bar 16, the 3rd horizontal stress are installed in the 3rd horizontal stress loading hole 9
Loading depression bar 16 is slidably matched with the sealing of the 3rd horizontal stress loading hole 9, the piston rod of the 3rd horizontal stress load cylinder 4
The outer end for loading depression bar 16 with the 3rd horizontal stress is fixedly connected with, and the 3rd horizontal stress load cylinder 4 passes through cylinder body and pressure chamber 1
Outer wall be fixedly connected with；
4th horizontal stress loading depression bar 17, the 4th horizontal stress are installed in the 4th horizontal stress loading hole 10
Loading depression bar 17 is slidably matched with the sealing of the 4th horizontal stress loading hole 10, the piston of the 4th horizontal stress load cylinder 5
The outer end that bar loads depression bar 17 with the 4th horizontal stress is fixedly connected with, and the 4th horizontal stress load cylinder 5 passes through cylinder body and pressure chamber
The outer wall of room 1 is fixedly connected with；
Be provided with the vertical stress loading hole 11 vertical stress loading depression bar 18, vertical stress loading depression bar 18 with
The sealing of vertical stress loading hole 11 is slidably matched, and piston rod and the vertical stress of the vertical stress load cylinder 6 load depression bar
18 outer end is fixedly connected with, and vertical stress load cylinder 6 is fixedly connected with by cylinder body and the outer wall of pressure chamber 1；
In the inner of the first level stress loading depression bar 14, the inner of the second horizontal stress loading depression bar 15, the 3rd
The inner of horizontal stress loading depression bar 16, the inner of the 4th horizontal stress loading depression bar 17, vertical stress load the interior of depression bar 18
The lower surface of end and detachable-type sealed cover plate 13 is mounted on pressure head 20；
Acoustic emission probe neck is offered in the side surface of the pressure head 20, acoustic emission is installed in acoustic emission probe neck
Probe 21, is measured by acoustic emission probe 21 to acoustic emission signal；Micro- electricity is installed in the inner surface of the pressure chamber 1
Sensitive nickel cobalt pole piece 22, is measured by micro- electrically susceptible sense nickel cobalt pole piece 22 to electric signal；
Between the first level stress loading depression bar 14 and the piston rod of first level stress loading oil cylinder 2, second
Horizontal stress loading the horizontal stress load cylinder 3 of depression bar 15 and second piston rod between, the 3rd horizontal stress loading depression bar 16
Between the piston rod of the 3rd horizontal stress load cylinder 4, loading depression bar 17 and the 4th horizontal stress loading of the 4th horizontal stress
Between the piston rod of oil cylinder 5, vertical stress loading depression bar 18 and vertical stress load cylinder 6 piston rod between add should
Force snesor 23.
The first level stress loading oil cylinder 2, the second horizontal stress load cylinder 3, the 3rd horizontal stress load cylinder
4th, it is mounted between the outer wall of the cylinder body and pressure chamber 1 of the 4th horizontal stress load cylinder 5 and vertical stress load cylinder 6
Be rigidly connected cylinder 24, and the first level stress loading depression bar 14, the second horizontal stress loading depression bar 15, the 3rd horizontal stress add
Carry depression bar 16, the 4th horizontal stress loading depression bar 17 and vertical stress loading depression bar 18 with it is each it is self-corresponding be rigidly connected cylinder 24 it
Between be mounted on grating sensor, by grating sensor to each horizontal stress load depression bar displacement measure.
Described be rigidly connected between cylinder 24 and the outer wall of pressure chamber 1 uses two-stage connected mode, and the cylinder 24 that is rigidly connected connects
Connecing end has external screw thread, and carries out the threaded connection of the first order by external screw thread and the outer wall of pressure chamber 1, in male ends
The cylinder 24 that is rigidly connected on be provided with ring flange, and pass through the outer wall of ring flange and pressure chamber 1 and carry out the bolt of the second level and connect
Connect.
Signal transmission socket is installed on the side wall of the pressure chamber 1, signal transmission socket is integrally in disk form,
Signal transmission socket is provided centrally with electric signal transmission interfaces, and the circumference of signal transmission socket is provided with acoustic emission signal
Coffret.In the present embodiment, electric signal transmission interfaces and acoustic emission signal coffret are connect using the inside/outside of copper inner core
High-strength insulating gel is coated between bnc interface, and the pedestal of copper inner core and signal transmission socket.
The pressure head 20 is provided with some groups according to different sizes, for being adapted to various sizes of coal and rock sample.
Illustrate first use process of the present utility model below in conjunction with the accompanying drawings：
In the present embodiment, first level stress loading oil cylinder 2, the second horizontal stress load cylinder 3, the 3rd horizontal stress add
Carry the horizontal stress load cylinder 5 of oil cylinder 4 and the 4th and use 600kN hydraulic jacks, vertical stress load cylinder 6 uses 1300kN
Hydraulic jack.Pressure head 20 sets two groups, and the first packet size specification is 50mm × 50mm and 50mm × 100mm, the second packet size rule
Lattice are 100mm × 100mm.
The pressure head 20 chosen first is respectively installed to corresponding horizontal stress and loads depression bar and detachable-type sealed cover plate 13
On, then acoustic emission probe is installed in the acoustic emission probe neck of pressure head 20, then the signal wire of acoustic emission probe is connected
To acoustic emission signal coffret.
Coal and rock sample is sent into pressure chamber 1 by sample handling by hole 12, then respectively should by first level
Power load cylinder 2 coordinates with the 3rd horizontal stress load cylinder 4, the second horizontal stress load cylinder 3 adds with the 4th horizontal stress
Carrying oil cylinder 5 coordinates the preliminary centering for completing coal and rock sample to clamp, and displacement sensing is installed between coal and rock sample and pressure head 20
Device, is then installed onto sample handling by hole 12, completing the sealing of pressure chamber 1 by detachable-type sealed cover plate 13.
Control vertical stress load cylinder 6 is acted, until the precise alignment for completing coal and rock sample is clamped, according still further to target
Load is loaded to coal and rock sample, is waited after target load loaded, is noted by fluid fillers hole 19 into pressure chamber 1
Enter fluid, untill fluid environment pressure reaches setting value, while being monitored in real time to fluid environmental pressure.
Acoustic emission signal is monitored by acoustic emission probe, electric signal is monitored by micro- electrically susceptible sense nickel cobalt pole piece 22, by answering
The monitor stress of force snesor 23 loads parameter, and strain parameter is monitored by displacement transducer, is lost until coal and rock sample is destroyed
Go after bearing capacity, terminate experiment, and record storage is carried out to the supplemental characteristic collected.Afterwards, first shed in pressure chamber 1
Fluid, then shed stress loading, then unload detachable-type sealed cover plate 13, finally take out coal and rock sample, you can be accurate
It is standby to test next time.
Scheme in embodiment simultaneously is not used to limit scope of patent protection of the present utility model, all without departing from the utility model
Carried out by equivalence enforcement or change, be both contained in the scope of the claims of this case.
Claims (5)
1. the coal and rock many reference amounts monitoring test device under a kind of loading based on true triaxial, it is characterised in that：Including pressure chamber,
First level stress loading oil cylinder, the second horizontal stress load cylinder, the 3rd horizontal stress load cylinder, the 4th horizontal stress add
Carry oil cylinder and vertical stress load cylinder；
The pressure chamber uses square structure, and first level stress loading is offered respectively on four side walls of pressure chamber
Hole, the second horizontal stress loading hole, the 3rd horizontal stress loading hole and the 4th horizontal stress loading hole, in the bottom plate of pressure chamber
On offer vertical stress loading hole, sample handling are offered on the top plate of pressure chamber by hole, sample handling pass through hole
On detachable-type sealed cover plate is installed, offer fluid fillers hole on the side wall of pressure chamber；
First level stress loading depression bar, first level stress loading depression bar are installed in the first level stress loading hole
It is slidably matched with the sealing of first level stress loading hole, piston rod and the first level of the first level stress loading oil cylinder should
The outer end of power loading depression bar is fixedly connected with, and first level stress loading oil cylinder is fixedly connected with by the outer wall of cylinder body and pressure chamber；
Second horizontal stress loading depression bar, the second horizontal stress loading depression bar are installed in the second horizontal stress loading hole
It is slidably matched with the sealing of the second horizontal stress loading hole, the piston rod and the second level of the second horizontal stress load cylinder should
The outer end of power loading depression bar is fixedly connected with, and the second horizontal stress load cylinder is fixedly connected with by the outer wall of cylinder body and pressure chamber；
3rd horizontal stress loading depression bar, the 3rd horizontal stress loading depression bar are installed in the 3rd horizontal stress loading hole
It is slidably matched with the sealing of the 3rd horizontal stress loading hole, the piston rod and the 3rd level of the 3rd horizontal stress load cylinder should
The outer end of power loading depression bar is fixedly connected with, and the 3rd horizontal stress load cylinder is fixedly connected with by the outer wall of cylinder body and pressure chamber；
4th horizontal stress loading depression bar, the 4th horizontal stress loading depression bar are installed in the 4th horizontal stress loading hole
It is slidably matched with the sealing of the 4th horizontal stress loading hole, the piston rod and the 4th level of the 4th horizontal stress load cylinder should
The outer end of power loading depression bar is fixedly connected with, and the 4th horizontal stress load cylinder is fixedly connected with by the outer wall of cylinder body and pressure chamber；
Vertical stress loading depression bar is installed in the vertical stress loading hole, vertical stress loading depression bar adds with vertical stress
Carry hole sealing to be slidably matched, the outer end that the piston rod of the vertical stress load cylinder loads depression bar with vertical stress is fixedly connected with,
Vertical stress load cylinder is fixedly connected with by the outer wall of cylinder body and pressure chamber；
In the inner of the first level stress loading depression bar, inner, the 3rd horizontal stress of the second horizontal stress loading depression bar
The inner, the inner of the 4th horizontal stress loading depression bar, vertical stress for loading depression bar load the inner and detachable close of depression bar
The lower surface of capping plate is mounted on pressure head；
Acoustic emission probe neck is offered in the side surface of the pressure head, acoustic emission probe is installed in acoustic emission probe neck,
Acoustic emission signal is measured by acoustic emission probe；Micro- electrically susceptible sense nickel cobalt pole is installed in the inner surface of the pressure chamber
Piece, is measured by micro- electrically susceptible sense nickel cobalt pole piece to electric signal；
Between the piston rod of the first level stress loading depression bar and first level stress loading oil cylinder, the second horizontal stress
Load between depression bar and the piston rod of the second horizontal stress load cylinder, the 3rd horizontal stress loads depression bar and the 3rd horizontal stress
Between the piston rod of load cylinder, the 4th horizontal stress loading depression bar and the 4th horizontal stress load cylinder piston rod between,
Vertical stress loads and adds strain gauge between depression bar and the piston rod of vertical stress load cylinder.
2. the coal and rock many reference amounts monitoring test device under a kind of loading based on true triaxial according to claim 1, it is special
Levy and be：The first level stress loading oil cylinder, the second horizontal stress load cylinder, the 3rd horizontal stress load cylinder,
Rigidity is mounted between four horizontal stress load cylinders and the cylinder body of vertical stress load cylinder and the outer wall of pressure chamber to connect
Connect cylinder, the first level stress loading depression bar, the second horizontal stress loading depression bar, the 3rd horizontal stress loading depression bar, the 4th
Horizontal stress loads and is mounted on grating sensing between depression bar and vertical stress loading depression bar and each self-corresponding cylinder that is rigidly connected
Device, the displacement for loading depression bar to each horizontal stress by grating sensor is measured.
3. the coal and rock many reference amounts monitoring test device under a kind of loading based on true triaxial according to claim 2, it is special
Levy and be：Described be rigidly connected between cylinder and the outer wall of pressure chamber uses two-stage connected mode, and be rigidly connected a connection end tool
There is external screw thread, and the threaded connection of the first order is carried out by external screw thread and the outer wall of pressure chamber, in the rigidity of male ends
Ring flange is provided with connecting cylinder, and passes through ring flange and the bolt connection of the outer wall of the pressure chamber progress second level.
4. the coal and rock many reference amounts monitoring test device under a kind of loading based on true triaxial according to claim 1, it is special
Levy and be：Signal transmission socket is installed on the side wall of the pressure chamber, signal transmission socket is integrally in disk form, in letter
Number transmission socket is provided centrally with electric signal transmission interfaces, and the circumference of signal transmission socket is provided with acoustic emission signal passes
Defeated interface.
5. the coal and rock many reference amounts monitoring test device under a kind of loading based on true triaxial according to claim 1, it is special
Levy and be：The pressure head is provided with some groups according to different sizes, for being adapted to various sizes of coal and rock sample.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720346318.4U CN206593980U (en) | 2017-04-05 | 2017-04-05 | A kind of coal and rock many reference amounts monitoring test device under the loading based on true triaxial |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720346318.4U CN206593980U (en) | 2017-04-05 | 2017-04-05 | A kind of coal and rock many reference amounts monitoring test device under the loading based on true triaxial |
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| Publication Number | Publication Date |
|---|---|
| CN206593980U true CN206593980U (en) | 2017-10-27 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840901A (en) * | 2017-04-05 | 2017-06-13 | 辽宁工程技术大学 | A kind of coal and rock many reference amounts monitoring test device under the loading based on true triaxial |
| CN109269904A (en) * | 2018-10-10 | 2019-01-25 | 辽宁工程技术大学 | A kind of coal and rock multi- scenarios method integration experimental rig based on drilling cuttings method |
-
2017
- 2017-04-05 CN CN201720346318.4U patent/CN206593980U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840901A (en) * | 2017-04-05 | 2017-06-13 | 辽宁工程技术大学 | A kind of coal and rock many reference amounts monitoring test device under the loading based on true triaxial |
| CN106840901B (en) * | 2017-04-05 | 2023-10-03 | 辽宁工程技术大学 | Coal rock mass multi-parameter monitoring test device based on true triaxial loading |
| CN109269904A (en) * | 2018-10-10 | 2019-01-25 | 辽宁工程技术大学 | A kind of coal and rock multi- scenarios method integration experimental rig based on drilling cuttings method |
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